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应用基于风险的检验技术(RBI)对某公司乙烯装置中的压力管道进行了风险分析,通过DNV ORBIT Onshore软件计算给出了该装置压力管道6年内的风险变化情况。结果表明:2010年所有管线全面检验中,2008、2009年完成检验管线的风险有所上升,中高风险项有14项。当前(2013年12月)失效可能性等级为3级的评价单元有6项,出现1个高风险项。通过适当的检验方案(包括在线检验手段)来降低其失效可能性等级,从而降低整个装置中高风险单元的风险水平,确保管线本质安全。 相似文献
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运用RBI技术对合成氨装置进行风险评估,确定装置失效可能性、失效后果以及风险等级,通过软件分析结果和损伤机理分析,确定设备主要失效模式为腐蚀减薄、应力腐蚀开裂和外部损伤,并由此制定了检验策略,提出了合理的降低风险措施。 相似文献
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基于风险评估的检验(RBI)技术综合考虑评估对象的经济性、安全性和潜在故障及失效风险,根据不同设备的故障及失效机理确定对应的检验策略。针对某丙烷脱氢联合装置,进行了风险评估,现场检验中发现的问题与前期评估结果较为一致,有效降低了设备的运行风险。 相似文献
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通过全面搜集装置承压设备、承压管线及安全阀历年检修档案及检验档案,再结合装置工艺、物流、腐蚀性介质及承压设备运行工况,分析装置中在用承压设备、管道潜在的失效机理,按照失效可能性和失效后果给出装置的维护和检验策略,提高装置在下一个大修周期前安全稳定运行的可靠性。通过实施RBI检验技术,系统地对化肥装置进行全面风险分析和检查,及时发现各类设备缺陷并处理,为装置安全、稳定运行奠定了基础,对后期设备管理思路的制定有着积极的指导作用。 相似文献
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应用基于风险的检验技术(RBI)对某公司OXO装置实施延期检验的压力容器进行了风险分析,通过DNV ORBIT Onshore软件计算给出了该装置压力容器5 a内的风险变化情况。结果表明,到2012年,装置中高风险等级较2011年风险上升较快,共有51个评价单元,占单元总量的8.79%,通过适当的检验方案(包括在线检验手段)来降低其失效可能性等级,降低其整个装置中高风险单元的风险水平;其余91.21%评价单元处于中低风险,可采取等风险级别原则,即控制在下一次检验开始之前的风险等级维持在原有水平,确保设备表本质安全。 相似文献
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In the literature, many works on determining inspection interval by the delay time concept generally assumed that the time of inspection span and the time of failure renewal are negligible. However, in realistic cases, the above time should not be neglected for both the time itself and its effect. In order to model the effect of the possible overlapping of inspection span with failure downtime on determining the optimal inspection interval, we propose a block-based inspection model for a single component-based on delay time concept. We further compare this model with the age-based model to show the practical sense. The developed models are also demonstrated by numerical examples. 相似文献
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分析了目前工业管道的使用现状,通过对近几年来在工业管道定期检验中发现的制造、安装时遗留的缺陷以及在使用中产生的腐蚀、疲劳、磨损和材质劣化等在用缺陷的分析,归纳、总结了管道宏观检验在外观检验、管道材质外观辨识、测厚部位的确定、保温层开拆部位的选择、无损检测部位的选择、安全保护装置六个方面的内容,阐明了宏观检验在工业管道定期检验中的重要性. 相似文献
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本文从钢材采购质量控制的角度,列举并分析了冶炼、成形、热处理、钢厂检验、进厂复验等环节影响钢材质量和性能的事例和原因,提出了压力容器制造厂钢材采购质量控制的措施。 相似文献
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搪玻璃设备常用于石油化工、橡胶、农药、染料、医药等行业,用以完成磺化、硝化、氢化、烃化、聚合、缩合等工艺过程,以及有机染料和中间体的其它工艺过程的反应和分离设备。搪玻璃反应罐由于结构的特殊性,在压力容器全面检验除按常规检验外,还应注意其他事项。 相似文献
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The objective of any system of non-destructively examining an adhesive joint must be to obtain a direct correlation between the strength of the joint and some mechanical, physical or chemical parameter which can readily be measured without causing damage. Faults or defects are defined as anything which adversely affect the short or long term strength of a joint. There are two basic areas for examination, the cohesive strength of the polymeric adhesive, and the adhesive strength of the bond between polymer and substrate.
Adhesive strength is very difficult to measure since it is an interfacial phenomenon involving a very thin layer of material, thin even in comparison with bond-line dimensions. Effectively, it would be necessary to assess intermolecular forces and this is not readily possible with existing techniques. This aspect of quality control is usually reduced to assessing the nature of the adherend surfaces prior to bonding.
The cohesive strength of the adhesive is really the only parameter which can be estimated with any degree of confidence, and it is this which features most on destructive tests of bonded joints.
In this paper, defects including porosity, surface un-bonds, zero-volume unbonds, poor cure and so on are discussed, together with the various methods currently used (and some new methods) for physical non-destructive testing. 相似文献
Adhesive strength is very difficult to measure since it is an interfacial phenomenon involving a very thin layer of material, thin even in comparison with bond-line dimensions. Effectively, it would be necessary to assess intermolecular forces and this is not readily possible with existing techniques. This aspect of quality control is usually reduced to assessing the nature of the adherend surfaces prior to bonding.
The cohesive strength of the adhesive is really the only parameter which can be estimated with any degree of confidence, and it is this which features most on destructive tests of bonded joints.
In this paper, defects including porosity, surface un-bonds, zero-volume unbonds, poor cure and so on are discussed, together with the various methods currently used (and some new methods) for physical non-destructive testing. 相似文献
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对一台脱硫槽判废检验案例进行了分析并提出了相应的防范措施。该脱硫槽表现出全面腐蚀、坑腐蚀和应力腐蚀综合作用的特征。 相似文献